| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Braun, Moritz
German Aerospace Center
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Fatigue crack initiation and propagation in plain and notched PBF-LB/M, WAAM, and wrought 316L stainless steel specimenscitations
- 2023Application of the limit design state to hull-girder ultimate strength evaluations on the ship-shaped structures
- 2023Application of the limit design state to hull-girder ultimate strength evaluations on the ship-shaped structures
- 2023Local fatigue assessment of butt-welded joints between additively manufactured 316L stainless steel parts
- 2023Hull girder ultimate strength of bulk carrier (HGUS-BC) evaluation: structural performances subjected to true inclination conditions of stiffened panel members
- 2023Strengthening mechanisms and strain hardening behavior of 316L stainless steel manufactured by laser-based powder bed fusioncitations
- 2023Mechanical behavior of additively and conventionally manufactured 316L stainless steel plates joined by gas metal arc weldingcitations
- 2023Mechanical behavior of additively and conventionally manufactured 316L stainless steel plates joined by gas metal arc weldingcitations
- 2022Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel jointscitations
- 2022Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints
- 2022Comparison of local fatigue assessment methods for high-quality butt-welded joints made of high-strength steel
- 2022Fatigue crack initiation and propagation relation of notched specimens with welded joint characteristics
- 2022Fatigue crack initiation and propagation relation of notched specimens with welded joint characteristicscitations
- 2022Influence of pitting corrosion on the fatigue strength of offshore steel structures based on 3D surface scans
- 2022Zum Verhältnis von Rissinitiierung und -ausbreitung an gekerbten Proben mit Schweißnahtcharakteristik ; On the relation between cycles to crack initiation and crack growth cycles at notched specimens with seam weld charakteristics
- 2021Probability analysis of PIT distribution on corroded ballast tank
- 2021Fatigue strength of PBF-LB/M and wrought 316L stainless steel : effect of post-treatment and cyclic mean stress
- 2020Extension of the strain energy density method for fatigue assessment of welded joints to sub-zero temperatures
- 2020Guidance for material selection based on static and dynamic mechanical properties at sub-zero temperaturescitations
- 2018Comparison of fatigue strength of post-weld improved high strength steel joints and notched base material specimens
Places of action
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document
Relation between the fatigue and fracture ductile-brittle transition in S500 welded steel joints
Abstract
The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 °C, the fatigue crack propagation rate is about half of the rate observed at room temperature for both base material and weld metal.